{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "Superoxide and hydrogen peroxide production in neutrophils stimulated with formyl - methionyl - leucyl - phenylalanine ( fMLP ) from a further 18 ALF patients was unaffected compared with control neutrophils ."}
{"Chemical": ["Superoxide", "hydrogen peroxide", "formyl - methionyl - leucyl - phenylalanine", "fMLP"], "Disease": ["ALF"]}